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Fluorite Siderite & Chalcopyrite

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NST691344

Fluorite Siderite & Chalcopyrite

Classic Locality

Description Tabs

Description
Locality: 
Luise Mine, Rottleberode, Stolberg, Harz, Saxony - Anhalt, Germany
Class: 
Artefact
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 2.7 cm
Largest Crystal: 
1.30cm
Description

A specimen of zonar-colored blueish-grey/ocre fluorite cubes and chalcopyrite on siderite matrix. The curiosity of this item is a crust of tar on both sides of the specimen. As some adits of this mine were asphalted for a better transportation, the tar might be an authentic indicator for its find underground.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0